The next logical implication is that these zombies should be pooping. I know they aren't much into hygiene and personal grooming, so why aren't we seeing zombies walking around with bulging pant-loads of zombie excrement? Why aren't these walking corpses with pantloads engulfed in a cloud of flies and crawling with maggots? We should be know they are coming just from the buzzing of their flies and their fetid pioli smell.